git.sesse.net Git - vlc/blob - modules/video_filter/remoteosd.c

   1 /*****************************************************************************
   2  * remoteosd.c: remote osd over vnc filter module
   3  *****************************************************************************
   4  * Copyright (C) 2007-2008 Matthias Bauer
   5  * $Id$
   6  *
   7  * Authors: Matthias Bauer <matthias dot bauer #_at_# gmx dot ch>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implid warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * RemoteOSD uses the RFB-Protocol of VNC to display an On-Screen-Display
  26  * menu generated by a streaming server as overlay for the streamed video.
  27  *
  28  * The streaming server that implements this is the ffnetdev plugin for VDR.
  29  * VDR (VideoDiskRecorder) is an Linux based OpenSource harddisk recorder
  30  * software.
  31  * The VDR ffnetdev plugin emulates the hardware MPEG decoder and streams the
  32  * video over the network instead of hardware video outputs.
  33  * The OSD menu of VDR is offered with the RFB protocol to a VNC client.
  34  *
  35  * In fact this video-filter is a simple VNC client that could be also used to
  36  * connect to a real VNC host.
  37  * Only 8-bit color is supported at the moment.
  38  * Using password protected VNC hosts is supported but not recommended, because
  39  * you need to insert the used password in the plugin configuration page of
  40  * VLC configuration in plain text and it's saved in plain text.
  41  *****************************************************************************/
  42
  43 //#define VNC_DEBUG
  44
  45 /*****************************************************************************
  46  * Preamble
  47  *****************************************************************************/
  48
  49 #ifdef HAVE_CONFIG_H
  50 # include "config.h"
  51 #endif
  52
  53 #include <vlc_common.h>
  54 #include <vlc_plugin.h>
  55 #include <vlc_vout.h>
  56
  57 #include "vlc_filter.h"
  58 #include "filter_common.h"
  59 #include "vlc_image.h"
  60 #include "vlc_osd.h"
  61 #include "vlc_keys.h"
  62
  63 #include <vlc_network.h>
  64 #include <gcrypt.h>              /* to encrypt password */
  65 #include <vlc_gcrypt.h>
  66
  67 #include "remoteosd_rfbproto.h" /* type definitions of the RFB protocol for VNC */
  68
  69 /*****************************************************************************
  70  * Module descriptor
  71  *****************************************************************************/
  72 #define READ_BUFFER_SIZE 1000000
  73
  74 #define RMTOSD_HOST_TEXT N_("VNC Host")
  75 #define RMTOSD_HOST_LONGTEXT N_( \
  76     "VNC hostname or IP address." )
  77
  78 #define RMTOSD_PORT_TEXT N_("VNC Port")
  79 #define RMTOSD_PORT_LONGTEXT N_( \
  80     "VNC portnumber." )
  81
  82 #define RMTOSD_PASSWORD_TEXT N_("VNC Password")
  83 #define RMTOSD_PASSWORD_LONGTEXT N_( \
  84     "VNC password." )
  85
  86 #define RMTOSD_UPDATE_TEXT N_("VNC poll interval" )
  87 #define RMTOSD_UPDATE_LONGTEXT N_( \
  88     "In this interval an update from VNC is requested, default every 300 ms. ")
  89
  90 #define RMTOSD_POLL_TEXT N_("VNC polling")
  91 #define RMTOSD_POLL_LONGTEXT N_( \
  92     "Activate VNC polling. Do NOT activate for use as VDR ffnetdev client." )
  93
  94 #define RMTOSD_MOUSE_TEXT N_("Mouse events")
  95 #define RMTOSD_MOUSE_LONGTEXT N_( \
  96     "Send mouse events to VNC host. Not needed for use as VDR ffnetdev client." )
  97
  98 #define RMTOSD_KEYS_TEXT N_("Key events")
  99 #define RMTOSD_KEYS_LONGTEXT N_( \
 100     "Send key events to VNC host." )
 101
 102 #define RMTOSD_ALPHA_TEXT N_("Alpha transparency value (default 255)")
 103 #define RMTOSD_ALPHA_LONGTEXT N_( \
 104     "The transparency of the OSD VNC can be changed by giving a value " \
 105     "between 0 and 255. A lower value specifies more transparency a higher " \
 106     "means less transparency. The default is being not transparent " \
 107     "(value 255) the minimum is fully transparent (value 0)." )
 108
 109 #define RMTOSD_CFG "rmtosd-"
 110
 111 #define RMTOSD_UPDATE_MIN     200
 112 #define RMTOSD_UPDATE_DEFAULT 1000
 113 #define RMTOSD_UPDATE_MAX     300
 114
 115 static int  CreateFilter ( vlc_object_t * );
 116 static void DestroyFilter( vlc_object_t * );
 117
 118 vlc_module_begin();
 119     set_description( N_("Remote-OSD over VNC") );
 120     set_capability( "sub filter", 100 );
 121     set_shortname( N_("Remote-OSD") );
 122     set_category( CAT_VIDEO );
 123     set_subcategory( SUBCAT_VIDEO_SUBPIC );
 124     add_shortcut( "rmtosd" );
 125     set_callbacks( CreateFilter, DestroyFilter );
 126
 127     add_string( RMTOSD_CFG "host", "myvdr", NULL, RMTOSD_HOST_TEXT,
 128         RMTOSD_HOST_LONGTEXT, false );
 129     add_integer_with_range( RMTOSD_CFG "port", 20001, 1, 0xFFFF, NULL,
 130         RMTOSD_PORT_TEXT, RMTOSD_PORT_LONGTEXT, false );
 131     add_password( RMTOSD_CFG "password", "", NULL, RMTOSD_PASSWORD_TEXT,
 132         RMTOSD_PASSWORD_LONGTEXT, false );
 133     add_integer_with_range( RMTOSD_CFG "update", RMTOSD_UPDATE_DEFAULT,
 134         RMTOSD_UPDATE_MIN, RMTOSD_UPDATE_MAX, NULL, RMTOSD_UPDATE_TEXT,
 135         RMTOSD_UPDATE_LONGTEXT, true );
 136     add_bool( RMTOSD_CFG "vnc-polling", 0, NULL,
 137               RMTOSD_POLL_TEXT , RMTOSD_POLL_LONGTEXT, false );
 138     add_bool( RMTOSD_CFG "mouse-events", 0, NULL,
 139               RMTOSD_MOUSE_TEXT , RMTOSD_MOUSE_LONGTEXT, false );
 140     add_bool( RMTOSD_CFG "key-events", 0, NULL,
 141               RMTOSD_KEYS_TEXT , RMTOSD_KEYS_LONGTEXT, false );
 142     add_integer_with_range( RMTOSD_CFG "alpha", 255, 0, 255, NULL,
 143         RMTOSD_ALPHA_TEXT, RMTOSD_ALPHA_LONGTEXT, true );
 144
 145 vlc_module_end();
 146
 147
 148 /*****************************************************************************
 149  * Local prototypes
 150  *****************************************************************************/
 151 #define CHALLENGESIZE 16
 152 #define MAX_VNC_SERVER_NAME_LENGTH 255
 153
 154 /* subfilter functions */
 155 static subpicture_t *Filter( filter_t *, mtime_t );
 156
 157 static int MouseEvent ( vlc_object_t *p_this, char const *psz_var,
 158                         vlc_value_t oldval, vlc_value_t newval, void *p_data );
 159
 160 static int KeyEvent( vlc_object_t *p_this, char const *psz_var,
 161                      vlc_value_t oldval, vlc_value_t newval, void *p_data );
 162
 163 static void stop_osdvnc ( filter_t *p_filter );
 164
 165 static void vnc_worker_thread ( vlc_object_t *p_thread_obj );
 166
 167 static void update_request_thread( vlc_object_t *p_thread_obj );
 168
 169 static bool open_vnc_connection ( filter_t *p_filter );
 170
 171 static bool handshaking ( filter_t *p_filter );
 172
 173 static bool process_server_message ( filter_t *p_filter,
 174                                      rfbServerToClientMsg *msg );
 175
 176 static inline void rgb_to_yuv( uint8_t *y, uint8_t *u, uint8_t *v,
 177                                int r, int g, int b );
 178
 179 static inline bool fill_rect( filter_sys_t* p_sys,
 180                               uint16_t i_x, uint16_t i_y,
 181                               uint16_t i_w, uint16_t i_h,
 182                               uint8_t i_color );
 183 static inline bool copy_rect( filter_sys_t* p_sys,
 184                               uint16_t i_x, uint16_t i_y,
 185                               uint16_t i_w, uint16_t i_h,
 186                               uint16_t i_sx, uint16_t i_sy );
 187
 188
 189 static inline bool raw_line(  filter_sys_t* p_sys,
 190                               uint16_t i_x, uint16_t i_y,
 191                               uint16_t i_w );
 192
 193 static void vnc_encrypt_bytes( unsigned char *bytes, char *passwd );
 194
 195
 196 /*****************************************************************************
 197  * Sub filter code
 198  *****************************************************************************/
 199
 200 /*****************************************************************************
 201  * Local prototypes
 202  *****************************************************************************/
 203 struct filter_sys_t
 204 {
 205     VLC_COMMON_MEMBERS
 206
 207     bool          b_need_update;       /* VNC picture is updated, do update the OSD*/
 208     mtime_t       i_vnc_poll_interval; /* Update the OSD menu every n ms */
 209
 210     uint8_t       i_alpha;             /* alpha transparency value */
 211
 212     char          *psz_host;           /* VNC host */
 213     int           i_port;
 214
 215     char          *psz_passwd;         /* VNC password */
 216
 217     bool          b_vnc_poll;          /* Activate VNC polling ? */
 218     bool          b_vnc_mouse_events;  /* Send MouseEvents ? */
 219     bool          b_vnc_key_events;    /* Send KeyEvents ? */
 220
 221     bool          b_connection_active; /* Handshaking finished ? */
 222
 223     vlc_mutex_t   lock;                /* To lock for read/write on picture */
 224
 225     picture_t     *p_pic;              /* The picture with OSD data from VNC */
 226
 227     vout_thread_t *p_vout;             /* Pointer to video-out thread */
 228
 229     int           i_socket;            /* Socket used for VNC */
 230
 231     uint16_t      i_vnc_width;          /* The with of the VNC screen */
 232     uint16_t      i_vnc_height;         /* The height of the VNC screen */
 233         uint32_t      i_vnc_pixels;         /* The pixels of the VNC screen */
 234
 235     bool    b_alpha_from_vnc;    /* Special ffnetdev alpha feature enabled ? */
 236
 237     char          read_buffer[READ_BUFFER_SIZE];
 238
 239     bool          b_continue;
 240
 241     vlc_object_t* p_worker_thread;
 242
 243     uint8_t       ar_color_table_yuv[256][4];
 244 };
 245
 246 /*****************************************************************************
 247  * CreateFilter: Create the filter and open the definition file
 248  *****************************************************************************/
 249 static int CreateFilter ( vlc_object_t *p_this )
 250 {
 251     filter_t *p_filter = (filter_t *)p_this;
 252     filter_sys_t *p_sys = NULL;
 253
 254     msg_Dbg( p_filter, "Creating vnc osd filter..." );
 255
 256     p_filter->p_sys = p_sys = malloc( sizeof(*p_sys) );
 257     if( !p_filter->p_sys )
 258         return VLC_ENOMEM;
 259     memset( p_sys, 0, sizeof(*p_sys) );
 260
 261     /* Populating struct */
 262     vlc_mutex_init( &p_sys->lock );
 263     p_sys->b_continue = true;
 264     p_sys->i_socket = -1;
 265     p_sys->p_pic = NULL;
 266
 267     p_sys->psz_host = var_CreateGetString( p_this, RMTOSD_CFG "host" );
 268     if( EMPTY_STR(p_sys->psz_host) )
 269     {
 270         msg_Err( p_filter, "unable to get vnc host" );
 271         goto error;
 272     }
 273
 274     p_sys->psz_passwd = var_CreateGetString( p_this, RMTOSD_CFG "password" );
 275     if( !p_sys->psz_passwd )
 276     {
 277         msg_Err( p_filter, "unable to get vnc password" );
 278         goto error;
 279     }
 280
 281     p_sys->i_port = var_CreateGetIntegerCommand( p_this, RMTOSD_CFG "port" );
 282
 283     p_sys->i_alpha = var_CreateGetIntegerCommand( p_this, RMTOSD_CFG "alpha" );
 284
 285     /* in miliseconds, 0 disables polling, should not be lower than 100 */
 286     p_sys->i_vnc_poll_interval  = var_CreateGetIntegerCommand( p_this,
 287                                                        RMTOSD_CFG "update" );
 288     if ( p_sys->i_vnc_poll_interval < 100)
 289     {
 290        p_sys->i_vnc_poll_interval = 100;
 291     }
 292
 293     for ( int i = 0; i < 256; i++ )
 294     {
 295         p_sys->ar_color_table_yuv[i][0] = 255;
 296         p_sys->ar_color_table_yuv[i][1] = 255;
 297         p_sys->ar_color_table_yuv[i][2] = 255;
 298         p_sys->ar_color_table_yuv[i][3] = 255;
 299     }
 300
 301     p_sys->b_vnc_poll = var_CreateGetBoolCommand( p_this,
 302                                             RMTOSD_CFG "vnc-polling" );
 303     p_sys->b_vnc_mouse_events = var_CreateGetBoolCommand( p_this,
 304                                             RMTOSD_CFG "mouse-events" );
 305     p_sys->b_vnc_key_events = var_CreateGetBoolCommand( p_this,
 306                                             RMTOSD_CFG "key-events" );
 307
 308     /* Keep track of OSD Events */
 309     p_sys->b_need_update  = false;
 310
 311     /* Attach subpicture filter callback */
 312     p_filter->pf_sub_filter = Filter;
 313
 314     p_sys->p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_PARENT );
 315
 316     if( p_sys->p_vout )
 317     {
 318         var_AddCallback( p_sys->p_vout, "mouse-moved",
 319                          MouseEvent, p_this );
 320         var_AddCallback( p_sys->p_vout, "mouse-button-down",
 321                          MouseEvent, p_this );
 322         var_AddCallback( p_sys->p_vout->p_libvlc, "key-pressed",
 323                          KeyEvent, p_this );
 324     }
 325
 326     es_format_Init( &p_filter->fmt_out, SPU_ES, VLC_FOURCC( 's','p','u',' ' ) );
 327     p_filter->fmt_out.i_priority = 0;
 328
 329     vlc_gcrypt_init();
 330
 331     /* create the vnc worker thread */
 332     p_sys->p_worker_thread = vlc_object_create( p_this,
 333                                                 sizeof( vlc_object_t ) );
 334     vlc_object_attach( p_sys->p_worker_thread, p_this );
 335     if( vlc_thread_create( p_sys->p_worker_thread, "vnc worker thread",
 336                            vnc_worker_thread,
 337                            VLC_THREAD_PRIORITY_LOW, false ) )
 338     {
 339         vlc_object_detach( p_sys->p_worker_thread );
 340         vlc_object_release( p_sys->p_worker_thread );
 341         msg_Err( p_filter, "cannot spawn vnc message reader thread" );
 342         goto error;
 343     }
 344
 345     msg_Dbg( p_filter, "osdvnc filter started" );
 346
 347     return VLC_SUCCESS;
 348
 349 error:
 350     msg_Err( p_filter, "osdvnc filter discarded" );
 351
 352     stop_osdvnc( p_filter );
 353
 354     vlc_mutex_destroy( &p_sys->lock );
 355     free( p_sys->psz_host );
 356     free( p_sys->psz_passwd );
 357     free( p_sys );
 358
 359     return VLC_EGENERIC;
 360 }
 361
 362 /*****************************************************************************
 363  * DestroyFilter: Make a clean exit of this plugin
 364  *****************************************************************************/
 365 static void DestroyFilter( vlc_object_t *p_this )
 366 {
 367     filter_t     *p_filter = (filter_t*)p_this;
 368     filter_sys_t *p_sys = p_filter->p_sys;
 369
 370     msg_Dbg( p_filter, "DestroyFilter called." );
 371
 372     stop_osdvnc( p_filter );
 373
 374     if( p_sys->p_vout )
 375     {
 376         var_DelCallback( p_sys->p_vout, "mouse-moved",
 377                          MouseEvent, p_this );
 378         var_DelCallback( p_sys->p_vout, "mouse-button-down",
 379                          MouseEvent, p_this );
 380         var_DelCallback( p_sys->p_vout->p_libvlc, "key-pressed",
 381                          KeyEvent, p_this );
 382
 383         vlc_object_release( p_sys->p_vout );
 384     }
 385
 386     var_Destroy( p_this, RMTOSD_CFG "host" );
 387     var_Destroy( p_this, RMTOSD_CFG "port" );
 388     var_Destroy( p_this, RMTOSD_CFG "password" );
 389     var_Destroy( p_this, RMTOSD_CFG "update" );
 390     var_Destroy( p_this, RMTOSD_CFG "vnc-polling" );
 391     var_Destroy( p_this, RMTOSD_CFG "mouse-events" );
 392     var_Destroy( p_this, RMTOSD_CFG "key-events" );
 393     var_Destroy( p_this, RMTOSD_CFG "alpha" );
 394
 395     vlc_mutex_destroy( &p_sys->lock );
 396     free( p_sys->psz_host );
 397     free( p_sys->psz_passwd );
 398     free( p_sys );
 399 }
 400
 401 static void stop_osdvnc ( filter_t *p_filter )
 402 {
 403     filter_sys_t *p_sys = p_filter->p_sys;
 404
 405     /* It will unlock socket reading */
 406     vlc_object_kill( p_filter );
 407
 408     /* */
 409     if( p_sys->p_worker_thread )
 410     {
 411         msg_Dbg( p_filter, "joining worker_thread" );
 412         vlc_object_kill( p_sys->p_worker_thread );
 413         vlc_thread_join( p_sys->p_worker_thread );
 414         vlc_object_detach( p_sys->p_worker_thread );
 415         vlc_object_release( p_sys->p_worker_thread );
 416         msg_Dbg( p_filter, "released worker_thread" );
 417     }
 418
 419     msg_Dbg( p_filter, "osdvnc stopped" );
 420 }
 421
 422 static bool read_exact( filter_t *p_filter,
 423                         int i_socket,
 424                         char* p_readbuf,
 425                         int i_bytes )
 426 {
 427     return i_bytes == net_Read( p_filter, i_socket, NULL,
 428                                   (unsigned char*)p_readbuf,
 429                                   i_bytes, true );
 430 }
 431
 432
 433 static bool write_exact( filter_t *p_filter,
 434                          int i_socket,
 435                          char* p_writebuf,
 436                          int i_bytes )
 437 {
 438     return i_bytes == net_Write( p_filter, i_socket, NULL,
 439                                   (unsigned char*)p_writebuf, i_bytes );
 440 }
 441
 442 static bool open_vnc_connection ( filter_t *p_filter )
 443 {
 444     filter_sys_t *p_sys = p_filter->p_sys;
 445
 446     msg_Dbg( p_filter, "Open socket to vnc server on %s:%u.",
 447               p_sys->psz_host, p_sys->i_port );
 448
 449     p_sys->i_socket = net_ConnectTCP( p_filter, p_sys->psz_host, p_sys->i_port );
 450
 451     if( p_sys->i_socket < 0 )
 452     {
 453         msg_Err( p_filter, "Could not open socket" );
 454         return false;
 455     }
 456
 457     msg_Dbg( p_filter, "socket is open." );
 458
 459     return true;
 460 }
 461
 462 static bool handshaking ( filter_t *p_filter )
 463 {
 464     filter_sys_t *p_sys = p_filter->p_sys;
 465
 466     msg_Dbg( p_filter, "Reading protocol version" );
 467
 468     rfbProtocolVersionMsg pv;
 469     if ( !read_exact( p_filter, p_sys->i_socket, pv,
 470                       sz_rfbProtocolVersionMsg ) )
 471     {
 472         msg_Err( p_filter, "Could not read version message" );
 473         return false;
 474     }
 475     pv[sz_rfbProtocolVersionMsg] = '\0'; /* pv size is sz_rfbProtocolVersionMsg+1 */
 476
 477     msg_Dbg( p_filter, "Server version is %s", pv );
 478
 479     strncpy(pv, "RFB 003.003\n", sz_rfbProtocolVersionMsg);
 480
 481     if( !write_exact(p_filter, p_sys->i_socket, pv,
 482                      sz_rfbProtocolVersionMsg) )
 483     {
 484         msg_Err( p_filter, "Could not write version message" );
 485         return false;
 486     }
 487
 488     msg_Dbg( p_filter, "Reading authentication scheme" );
 489     uint32_t i_authScheme;
 490     if( !read_exact( p_filter, p_sys->i_socket, (char*)&i_authScheme, 4 ) )
 491     {
 492         msg_Err( p_filter, "Could not read authentication scheme" );
 493         return false;
 494     }
 495     i_authScheme = htonl(i_authScheme);
 496
 497     msg_Dbg( p_filter, "Authentication scheme = %x", i_authScheme );
 498     if ( i_authScheme == rfbConnFailed )
 499     {
 500         msg_Err( p_filter, "Connection rejected by server" );
 501         return false;
 502     }
 503     if (i_authScheme == rfbVncAuth)
 504     {
 505         unsigned char challenge[CHALLENGESIZE];
 506         if ( !read_exact( p_filter, p_sys->i_socket,
 507                           (char*)challenge, CHALLENGESIZE ) )
 508         {
 509             msg_Err( p_filter, "Could not read password challenge" );
 510             return false;
 511         }
 512
 513         vnc_encrypt_bytes( challenge, p_sys->psz_passwd );
 514
 515         if( !write_exact(p_filter, p_sys->i_socket,
 516                          (char*)challenge, CHALLENGESIZE ) )
 517         {
 518             msg_Err( p_filter, "Could not write password" );
 519             return false;
 520         }
 521         uint32_t i_authResult;
 522         if( !read_exact( p_filter, p_sys->i_socket, (char*)&i_authResult, 4 ) )
 523         {
 524             msg_Err( p_filter, "Could not read authentication result" );
 525             return false;
 526         }
 527         i_authResult = htonl(i_authResult);
 528         if (i_authResult != rfbVncAuthOK)
 529         {
 530             msg_Err( p_filter, "VNC authentication failed" );
 531             return false;
 532         }
 533     }
 534
 535     msg_Dbg( p_filter, "Writing client init message" );
 536     rfbClientInitMsg ci;
 537     ci.shared = 1;
 538     if( !write_exact( p_filter, p_sys->i_socket,
 539                       (char*)&ci, sz_rfbClientInitMsg ) )
 540     {
 541         msg_Err( p_filter, "Could not write client init message" );
 542         return false;
 543     }
 544
 545     msg_Dbg( p_filter, "Reading server init message" );
 546     rfbServerInitMsg si;
 547     if( !read_exact( p_filter, p_sys->i_socket,
 548                      (char*)&si, sz_rfbServerInitMsg ) )
 549     {
 550         msg_Err( p_filter, "Could not read server init message" );
 551         return false;
 552     }
 553     si.framebufferWidth = htons(si.framebufferWidth);
 554     si.framebufferHeight = htons(si.framebufferHeight);
 555     si.format.redMax = htons(si.format.redMax);
 556     si.format.greenMax = htons(si.format.greenMax);
 557     si.format.blueMax = htons(si.format.blueMax);
 558
 559     p_sys->i_vnc_width = si.framebufferWidth;
 560     p_sys->i_vnc_height = si.framebufferHeight;
 561
 562     msg_Dbg( p_filter, "Servers preferred pixelformat: "
 563                         "%ux%u, R(%u),G(%u),B(%u), %u bit, depht=%u, %s",
 564                         si.framebufferWidth,
 565                         si.framebufferHeight,
 566                         si.format.redMax,
 567                         si.format.greenMax,
 568                         si.format.blueMax,
 569                         si.format.bitsPerPixel,
 570                         si.format.depth,
 571                         si.format.trueColour ? "TrueColor" : "Not-TrueColor");
 572
 573     uint32_t i_nameLength = htonl(si.nameLength);
 574     if( i_nameLength > MAX_VNC_SERVER_NAME_LENGTH )
 575     {
 576         msg_Err( p_filter, "Server name too long" );
 577         return false;
 578     }
 579     char s_ServerName[MAX_VNC_SERVER_NAME_LENGTH+1];
 580
 581     msg_Dbg( p_filter, "Reading server name with size = %u", i_nameLength );
 582     if( !read_exact( p_filter, p_sys->i_socket, s_ServerName, i_nameLength ) )
 583     {
 584         msg_Err( p_filter, "Could not read server name" );
 585         return false;
 586     }
 587     s_ServerName[i_nameLength] = '\0';
 588
 589     if( strcmp( s_ServerName, "VDR-OSD") == 0 )
 590     {
 591         msg_Dbg( p_filter, "Server is a VDR" );
 592         p_sys->b_alpha_from_vnc = true;
 593     }
 594     else
 595     {
 596         msg_Dbg( p_filter, "Server is a normal VNC" );
 597         p_sys->b_alpha_from_vnc = false;
 598     }
 599
 600
 601     msg_Dbg( p_filter, "Server init message read properly" );
 602     msg_Dbg( p_filter, "Server name is %s", s_ServerName );
 603
 604     msg_Dbg( p_filter, "Writing SetPixelFormat message" );
 605
 606     rfbSetPixelFormatMsg sp;
 607     sp.type = rfbSetPixelFormat;
 608     sp.pad1 = sp.pad2 = 0;
 609     sp.format.bitsPerPixel = 8;
 610     sp.format.depth = 8 ;
 611     sp.format.bigEndian = 1;
 612     sp.format.trueColour = 0;
 613     sp.format.redMax = htons(31);
 614     sp.format.greenMax = htons(31);
 615     sp.format.blueMax = htons(31);
 616     sp.format.redShift = 10;
 617     sp.format.greenShift = 5;
 618     sp.format.blueShift = 0;
 619     sp.format.pad1 = sp.format.pad2 = 0;
 620
 621     if( !write_exact( p_filter, p_sys->i_socket,
 622                       (char*)&sp, sz_rfbSetPixelFormatMsg) )
 623     {
 624         msg_Err( p_filter, "Could not write SetPixelFormat message" );
 625         return false;
 626     }
 627
 628     msg_Dbg( p_filter, "Writing SetEncodings message" );
 629
 630     rfbSetEncodingsMsg se;
 631     se.type = rfbSetEncodings;
 632     se.pad = 0;
 633     se.nEncodings = htons( p_sys->b_alpha_from_vnc ? 3 : 2 );
 634
 635     if( !write_exact( p_filter, p_sys->i_socket,
 636                       (char*)&se, sz_rfbSetEncodingsMsg) )
 637     {
 638         msg_Err( p_filter, "Could not write SetEncodings message begin" );
 639         return false;
 640     }
 641
 642     uint32_t i_encoding;
 643
 644     msg_Dbg( p_filter, "Writing SetEncodings rfbEncodingCopyRect" );
 645     i_encoding = htonl(rfbEncodingCopyRect);
 646     if( !write_exact( p_filter, p_sys->i_socket, (char*)&i_encoding, 4) )
 647     {
 648         msg_Err( p_filter, "Could not write encoding type rfbEncodingCopyRect." );
 649         return false;
 650     }
 651
 652     msg_Dbg( p_filter, "Writing SetEncodings rfbEncodingRRE" );
 653     i_encoding = htonl(rfbEncodingRRE);
 654     if( !write_exact(p_filter, p_sys->i_socket, (char*)&i_encoding, 4) )
 655     {
 656         msg_Err( p_filter, "Could not write encoding type rfbEncodingRRE." );
 657         return false;
 658     }
 659
 660     if( p_sys->b_alpha_from_vnc )
 661     {
 662         msg_Dbg( p_filter, "Writing SetEncodings rfbEncSpecialUseAlpha" );
 663         i_encoding = 0x00F0FFFF; /* rfbEncSpecialUseAlpha is 0xFFFFF000
 664                                   * before we swap it */
 665         if( !write_exact(p_filter, p_sys->i_socket, (char*)&i_encoding, 4) )
 666         {
 667             msg_Err( p_filter, "Could not write encoding type rfbEncSpecialUseAlpha." );
 668             return false;
 669         }
 670     }
 671     return true;
 672
 673 }
 674
 675 static void vnc_worker_thread( vlc_object_t *p_thread_obj )
 676 {
 677     filter_t* p_filter = (filter_t*)(p_thread_obj->p_parent);
 678     filter_sys_t *p_sys = p_filter->p_sys;
 679     vlc_object_t *p_update_request_thread;
 680
 681     msg_Dbg( p_filter, "VNC worker thread started" );
 682
 683     if( !open_vnc_connection ( p_filter ) )
 684     {
 685         msg_Err( p_filter, "Could not connect to vnc host" );
 686         goto exit;
 687     }
 688
 689     if( !handshaking ( p_filter ) )
 690     {
 691         msg_Err( p_filter, "Error occured while handshaking vnc host" );
 692         goto exit;
 693     }
 694
 695     p_sys->b_connection_active = true; /* to enable sending key
 696                                             * and mouse events to host */
 697
 698     /* Create an empty picture for VNC the data */
 699     vlc_mutex_lock( &p_sys->lock );
 700     p_sys->p_pic = picture_New( VLC_FOURCC('Y','U','V','A'),
 701                                 p_sys->i_vnc_width, p_sys->i_vnc_height, VOUT_ASPECT_FACTOR );
 702     if( !p_sys->p_pic )
 703     {
 704         vlc_mutex_unlock( &p_sys->lock );
 705         goto exit;
 706     }
 707         p_sys->i_vnc_pixels = p_sys->i_vnc_width * p_sys->i_vnc_height;
 708
 709     vlc_mutex_unlock( &p_sys->lock );
 710
 711     /* create the update request thread */
 712     p_update_request_thread = vlc_object_create( p_filter,
 713                                                  sizeof( vlc_object_t ) );
 714     vlc_object_attach( p_update_request_thread, p_filter );
 715     if( vlc_thread_create( p_update_request_thread,
 716                            "vnc update request thread",
 717                            update_request_thread,
 718                            VLC_THREAD_PRIORITY_LOW, false ) )
 719     {
 720         vlc_object_detach( p_update_request_thread );
 721         vlc_object_release( p_update_request_thread );
 722         msg_Err( p_filter, "cannot spawn vnc update request thread" );
 723         goto exit;
 724     }
 725
 726     /* connection is initialized, now read and handle server messages */
 727     while( vlc_object_alive( p_thread_obj ) )
 728     {
 729         rfbServerToClientMsg msg;
 730         int i_msgSize;
 731
 732         memset( &msg, 0, sizeof(msg) );
 733
 734         if( !read_exact(p_filter, p_sys->i_socket, (char*)&msg, 1 ) )
 735         {
 736             msg_Err( p_filter, "Error while waiting for next server message");
 737             break;
 738         }
 739         switch (msg.type)
 740         {
 741         case rfbFramebufferUpdate:
 742             i_msgSize = sz_rfbFramebufferUpdateMsg;
 743             break;
 744         case rfbSetColourMapEntries:
 745             i_msgSize = sz_rfbSetColourMapEntriesMsg;
 746             break;
 747         case rfbBell:
 748             i_msgSize = sz_rfbBellMsg;
 749             break;
 750         case rfbServerCutText:
 751             i_msgSize = sz_rfbServerCutTextMsg;
 752             break;
 753         case rfbReSizeFrameBuffer:
 754             i_msgSize = sz_rfbReSizeFrameBufferMsg;
 755             break;
 756         default:
 757             i_msgSize = 0;
 758             msg_Err( p_filter, "Invalid message %u received", msg.type );
 759             break;
 760         }
 761
 762         if( i_msgSize <= 0 )
 763             break;
 764
 765         if( --i_msgSize > 0 )
 766         {
 767             if ( !read_exact( p_filter, p_sys->i_socket,
 768                               ((char*)&msg)+1, i_msgSize ) )
 769             {
 770                 msg_Err( p_filter, "Error while reading message of type %u",
 771                          msg.type );
 772                 break;
 773             }
 774         }
 775         process_server_message( p_filter, &msg);
 776     }
 777
 778     msg_Dbg( p_filter, "joining update_request_thread" );
 779     vlc_object_kill( p_update_request_thread );
 780     vlc_thread_join( p_update_request_thread );
 781     vlc_object_detach( p_update_request_thread );
 782     vlc_object_release( p_update_request_thread );
 783     msg_Dbg( p_filter, "released update_request_thread" );
 784
 785 exit:
 786
 787     vlc_mutex_lock( &p_sys->lock );
 788     p_sys->b_connection_active = false;
 789
 790     if (p_sys->i_socket >= 0)
 791         net_Close(p_sys->i_socket);
 792
 793     if( p_sys->p_pic )
 794         picture_Release( p_sys->p_pic );
 795
 796     /* It will hide the subtitle */
 797     p_sys->b_continue = false;
 798     p_sys->b_need_update = true;
 799     vlc_mutex_unlock( &p_sys->lock );
 800
 801     msg_Dbg( p_filter, "VNC message reader thread ended" );
 802 }
 803
 804 static void update_request_thread( vlc_object_t *p_thread_obj )
 805 {
 806     filter_t* p_filter = (filter_t*)(p_thread_obj->p_parent);
 807     filter_sys_t *p_sys = p_filter->p_sys;
 808
 809     msg_Dbg( p_filter, "VNC update request thread started" );
 810
 811     rfbFramebufferUpdateRequestMsg udr;
 812     udr.type = rfbFramebufferUpdateRequest;
 813     udr.incremental = 0;
 814     udr.x = 0;
 815     udr.y = 0;
 816     udr.w = htons(p_sys->i_vnc_width);
 817     udr.h = htons(p_sys->i_vnc_height);
 818
 819     if( write_exact(p_filter, p_sys->i_socket, (char*)&udr,
 820            sz_rfbFramebufferUpdateRequestMsg) == false)
 821     {
 822         msg_Err( p_filter, "Could not write rfbFramebufferUpdateRequestMsg." );
 823         p_sys->b_continue = false;
 824         return;
 825     }
 826
 827     udr.incremental = 1;
 828     mtime_t i_poll_interval_microsec = p_sys->i_vnc_poll_interval * 1000;
 829
 830     if( p_sys->b_vnc_poll)
 831     {
 832         while( vlc_object_alive( p_thread_obj ) )
 833         {
 834             msleep( i_poll_interval_microsec );
 835             if( write_exact(p_filter, p_sys->i_socket, (char*)&udr,
 836                    sz_rfbFramebufferUpdateRequestMsg) == false)
 837             {
 838                 msg_Err( p_filter, "Could not write rfbFramebufferUpdateRequestMsg." );
 839                 break;
 840             }
 841         }
 842         p_sys->b_continue = false;
 843     }
 844     else
 845     {
 846         msg_Dbg( p_filter, "VNC polling disabled." );
 847     }
 848
 849     msg_Dbg( p_filter, "VNC update request thread ended" );
 850 }
 851
 852 static bool process_server_message ( filter_t *p_filter,
 853                                      rfbServerToClientMsg *msg )
 854 {
 855     filter_sys_t *p_sys = p_filter->p_sys;
 856
 857     switch (msg->type)
 858     {
 859     case rfbFramebufferUpdate:
 860         {
 861             msg->fu.nRects = htons(msg->fu.nRects);
 862             rfbFramebufferUpdateRectHeader hdr;
 863
 864             for (int i_rect = 0; i_rect < msg->fu.nRects; i_rect++)
 865             {
 866                 if (!read_exact(p_filter, p_sys->i_socket, (char*)&hdr,
 867                     sz_rfbFramebufferUpdateRectHeader ) )
 868                 {
 869                     msg_Err( p_filter, "Could not read FrameBufferUpdate header" );
 870                     return false;
 871                 }
 872                 hdr.r.x = htons(hdr.r.x);
 873                 hdr.r.y = htons(hdr.r.y);
 874                 hdr.r.w = htons(hdr.r.w);
 875                 hdr.r.h = htons(hdr.r.h);
 876                 hdr.encoding = htonl(hdr.encoding);
 877
 878                 switch (hdr.encoding)
 879                 {
 880                 case rfbEncodingRaw:
 881                     {
 882                         int i_line;
 883                         for (i_line = 0; i_line < hdr.r.h; i_line++)
 884                         {
 885                             if ( !read_exact( p_filter, p_sys->i_socket,
 886                                     p_sys->read_buffer, hdr.r.w ) )
 887                             {
 888                                 msg_Err( p_filter,
 889                                  "Could not read FrameBufferUpdate line data" );
 890                                return false;
 891                             }
 892                             vlc_mutex_lock( &p_sys->lock );
 893                             if ( !raw_line( p_sys, hdr.r.x,
 894                                             hdr.r.y + i_line,
 895                                             hdr.r.w ) )
 896                             {
 897                                 msg_Err( p_filter, "raw_line failed." );
 898                                 vlc_mutex_unlock( &p_sys->lock );
 899                                 return false;
 900                             }
 901                             vlc_mutex_unlock( &p_sys->lock );
 902                         }
 903                     }
 904                     break;
 905
 906                 case rfbEncodingCopyRect:
 907                     {
 908                         rfbCopyRect rect;
 909
 910                         if ( !read_exact( p_filter, p_sys->i_socket,
 911                                           (char*)&rect,
 912                                           sz_rfbCopyRect ) )
 913                         {
 914                             msg_Err( p_filter, "Could not read rfbCopyRect" );
 915                             return false;
 916                         }
 917                         rect.srcX = htons( rect.srcX );
 918                         rect.srcY = htons( rect.srcY );
 919
 920                         vlc_mutex_lock( &p_sys->lock );
 921                         if ( !copy_rect( p_sys,
 922                                          hdr.r.x,   hdr.r.y,
 923                                          hdr.r.w,   hdr.r.h,
 924                                          rect.srcX, rect.srcY ) )
 925                         {
 926                             msg_Err( p_filter, "copy_rect failed." );
 927                             vlc_mutex_unlock( &p_sys->lock );
 928                             return false;
 929                         }
 930                         vlc_mutex_unlock( &p_sys->lock );
 931                     }
 932                     break;
 933
 934                 case rfbEncodingRRE:
 935                     {
 936                         rfbRREHeader rrehdr;
 937                         if ( !read_exact( p_filter, p_sys->i_socket,
 938                                           (char*)&rrehdr,
 939                                           sz_rfbRREHeader ) )
 940                         {
 941                             msg_Err( p_filter, "Could not read rfbRREHeader" );
 942                             return false;
 943                         }
 944                         uint8_t i_pixcolor;
 945                         if ( !read_exact(p_filter, p_sys->i_socket,
 946                                          (char*)&i_pixcolor, 1 ) )
 947                         {
 948                             msg_Err( p_filter, "Could not read RRE pixcolor" );
 949                             return false;
 950                         }
 951
 952                         vlc_mutex_lock( &p_sys->lock );
 953                         if ( !fill_rect( p_sys,
 954                                         hdr.r.x, hdr.r.y,
 955                                         hdr.r.w, hdr.r.h,
 956                                         i_pixcolor) )
 957                         {
 958                             msg_Err( p_filter, "main fill_rect failed." );
 959                             vlc_mutex_unlock( &p_sys->lock );
 960                             return false;
 961                         }
 962                         vlc_mutex_unlock( &p_sys->lock );
 963
 964                         rrehdr.nSubrects = htonl(rrehdr.nSubrects);
 965
 966                         int i_datasize = rrehdr.nSubrects *
 967                                      ( sizeof(i_pixcolor) + sz_rfbRectangle ) ;
 968                         if ( i_datasize > READ_BUFFER_SIZE )
 969                         {
 970                             msg_Err( p_filter, "Buffer too small, "
 971                                      "need %u bytes", i_datasize );
 972                             return false;
 973                         }
 974                         if ( !read_exact( p_filter, p_sys->i_socket,
 975                                        p_sys->read_buffer, i_datasize ) )
 976                         {
 977                             msg_Err( p_filter,
 978                                      "Could not read RRE subrect data" );
 979                             return false;
 980                         }
 981
 982                         uint32_t i_subrect;
 983                         rfbRectangle* p_subrect;
 984                         int i_offset = 0;
 985                         vlc_mutex_lock( &p_sys->lock );
 986                         for ( i_subrect = 0;
 987                               i_subrect < rrehdr.nSubrects; i_subrect++)
 988                         {
 989                             i_pixcolor = p_sys->read_buffer[i_offset];
 990                             i_offset += sizeof(i_pixcolor);
 991                             p_subrect =
 992                                (rfbRectangle*)(p_sys->read_buffer + i_offset);
 993                             i_offset += sz_rfbRectangle;
 994
 995                             if (!fill_rect( p_sys,
 996                                             htons(p_subrect->x) + hdr.r.x,
 997                                             htons(p_subrect->y) + hdr.r.y,
 998                                             htons(p_subrect->w),
 999                                             htons(p_subrect->h),
1000                                             i_pixcolor) )
1001                             {
1002                                 msg_Err( p_filter,
1003                                     "subrect %u fill_rect failed.", i_subrect );
1004                                 vlc_mutex_unlock( &p_sys->lock );
1005                                 return false;
1006                             }
1007                         }
1008                         vlc_mutex_unlock( &p_sys->lock );
1009                     }
1010                     break;
1011
1012                 }
1013
1014             }
1015             vlc_mutex_lock( &p_sys->lock );
1016             p_sys->b_need_update = true;
1017             vlc_mutex_unlock( &p_sys->lock );
1018         }
1019         return true;
1020
1021     case rfbSetColourMapEntries:
1022         {
1023             msg->scme.nColours = htons(msg->scme.nColours);
1024             msg->scme.firstColour = htons(msg->scme.firstColour);
1025             int i_datasize;
1026             if ( p_sys->b_alpha_from_vnc == true )
1027             {
1028                 i_datasize = 2 * msg->scme.nColours * 4;
1029             }
1030             else
1031             {
1032                 i_datasize = 2 * msg->scme.nColours * 3;
1033             }
1034             if ( i_datasize > READ_BUFFER_SIZE )
1035             {
1036                 msg_Err( p_filter, "Buffer too small, need %u bytes",
1037                                    i_datasize );
1038                 return false;
1039             }
1040
1041             if ( !read_exact( p_filter, p_sys->i_socket,
1042                               p_sys->read_buffer, i_datasize ) )
1043             {
1044                 msg_Err( p_filter, "Could not read color map data" );
1045                 return false;
1046             }
1047
1048             uint8_t i_red, i_green, i_blue, i_alpha, i_color_index;
1049             uint16_t i_offset = 0;
1050             i_alpha = 255;
1051
1052             for (int i = 0; i < msg->scme.nColours; i++)
1053             {
1054                 i_color_index = i+msg->scme.firstColour;
1055                 if ( p_sys->b_alpha_from_vnc == true )
1056                 {
1057                     i_alpha = p_sys->read_buffer[i_offset];
1058                     i_offset += 2;
1059                 }
1060                 i_red   = p_sys->read_buffer[i_offset];
1061                 i_offset += 2;
1062                 i_green = p_sys->read_buffer[i_offset];
1063                 i_offset += 2;
1064                 i_blue  = p_sys->read_buffer[i_offset];
1065                 i_offset += 2;
1066                 rgb_to_yuv( &p_sys->ar_color_table_yuv[i_color_index][0],
1067                             &p_sys->ar_color_table_yuv[i_color_index][1],
1068                             &p_sys->ar_color_table_yuv[i_color_index][2],
1069                             i_red,
1070                             i_green,
1071                             i_blue );
1072                 p_sys->ar_color_table_yuv[i][3] = i_alpha;
1073             }
1074         }
1075         return true;
1076
1077     case rfbBell:
1078         msg_Err( p_filter, "rfbBell received" );
1079         return true;
1080
1081     case rfbServerCutText:
1082         msg->sct.length = htons(msg->sct.length);
1083         if ( msg->sct.length > READ_BUFFER_SIZE )
1084         {
1085             msg_Err( p_filter, "Buffer too small, need %u bytes", msg->sct.length );
1086             return false;
1087         }
1088         if ( !read_exact(p_filter, p_sys->i_socket,
1089                          p_sys->read_buffer, msg->sct.length ) )
1090         {
1091             msg_Err( p_filter, "Could not read Reading rfbServerCutText data" );
1092             return false;
1093         }
1094         return true;
1095
1096     case rfbReSizeFrameBuffer:
1097         msg_Err( p_filter, "Reading rfbReSizeFrameBuffer not implemented" );
1098         return false;
1099
1100     default:
1101         msg_Err( p_filter, "Invalid message %u received", msg->type );
1102         return false;
1103     }
1104     return false;
1105 }
1106
1107 /****************************************************************************
1108  * Filter: the whole thing
1109  ****************************************************************************
1110  * This function outputs subpictures at regular time intervals.
1111  ****************************************************************************/
1112 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
1113 {
1114     filter_sys_t *p_sys = p_filter->p_sys;
1115     subpicture_t *p_spu;
1116     subpicture_region_t *p_region;
1117     video_format_t fmt;
1118     picture_t *p_pic;
1119
1120     if( !p_sys->b_need_update )
1121     {
1122         return NULL;
1123     }
1124
1125     vlc_mutex_lock( &p_sys->lock );
1126
1127     p_pic = p_sys->p_pic;
1128
1129     if( !p_pic )
1130     {
1131         vlc_mutex_unlock( &p_sys->lock );
1132         return NULL;
1133     }
1134
1135     /* Allocate the subpicture internal data. */
1136     p_spu = filter_NewSubpicture( p_filter );
1137     if( !p_spu )
1138     {
1139         vlc_mutex_unlock( &p_sys->lock );
1140         return NULL;
1141     }
1142
1143     p_spu->b_absolute = false;
1144     p_spu->i_start = date;
1145     p_spu->i_stop = 0;
1146     p_spu->b_ephemer = true;
1147
1148     if( !p_sys->b_continue )
1149         p_spu->i_stop = p_spu->i_start + 1;
1150
1151     /* Create new SPU region */
1152     memset( &fmt, 0, sizeof(video_format_t) );
1153     fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
1154     fmt.i_aspect = VOUT_ASPECT_FACTOR;
1155     fmt.i_sar_num = fmt.i_sar_den = 1;
1156     fmt.i_width = fmt.i_visible_width = p_pic->p[Y_PLANE].i_visible_pitch;
1157     fmt.i_height = fmt.i_visible_height = p_pic->p[Y_PLANE].i_visible_lines;
1158     fmt.i_x_offset = fmt.i_y_offset = 0;
1159     p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
1160     if( !p_region )
1161     {
1162         msg_Err( p_filter, "cannot allocate SPU region" );
1163         p_filter->pf_sub_buffer_del( p_filter, p_spu );
1164         vlc_mutex_unlock( &p_sys->lock );
1165         return NULL;
1166     }
1167
1168     vout_CopyPicture( p_filter, &p_region->picture, p_pic );
1169
1170     p_sys->b_need_update = false;
1171
1172     vlc_mutex_unlock( &p_sys->lock );
1173
1174     /* set to one of the 9 relative locations */
1175     p_region->i_align = 0; /* Center */
1176     p_spu->b_absolute = false;
1177
1178
1179     p_spu->i_x = 0;
1180     p_spu->i_y = 0;
1181     p_spu->i_original_picture_width = 0; /*Let vout core do the horizontal scaling */
1182     p_spu->i_original_picture_height = fmt.i_height;
1183
1184     p_spu->p_region = p_region;
1185
1186     p_spu->i_alpha = ( p_sys->i_alpha );
1187
1188     return p_spu;
1189 }
1190
1191
1192 static inline void rgb_to_yuv( uint8_t *y, uint8_t *u, uint8_t *v,
1193                                int r, int g, int b )
1194 {
1195     *y = ( ( (  66 * r + 129 * g +  25 * b + 128 ) >> 8 ) + 16 );
1196     *u =   ( ( -38 * r -  74 * g + 112 * b + 128 ) >> 8 ) + 128 ;
1197     *v =   ( ( 112 * r -  94 * g -  18 * b + 128 ) >> 8 ) + 128 ;
1198 }
1199
1200 static inline bool fill_rect( filter_sys_t* p_sys,
1201                               uint16_t i_x, uint16_t i_y,
1202                               uint16_t i_w, uint16_t i_h,
1203                               uint8_t i_color)
1204 {
1205     plane_t *p_outY = p_sys->p_pic->p+Y_PLANE;
1206     plane_t *p_outU = p_sys->p_pic->p+U_PLANE;
1207     plane_t *p_outV = p_sys->p_pic->p+V_PLANE;
1208     plane_t *p_outA = p_sys->p_pic->p+A_PLANE;
1209     int i_pitch = p_outY->i_pitch;
1210     int i_lines = p_outY->i_lines;
1211     if ( i_x + i_w > i_pitch)
1212         return false;
1213     if ( i_y + i_h > i_lines)
1214         return false;
1215     int i_line_offset = i_y * i_pitch;
1216     uint8_t i_yuv_y = p_sys->ar_color_table_yuv[i_color][0];
1217     uint8_t i_yuv_u = p_sys->ar_color_table_yuv[i_color][1];
1218     uint8_t i_yuv_v = p_sys->ar_color_table_yuv[i_color][2];
1219     uint8_t i_alpha = p_sys->ar_color_table_yuv[i_color][3];
1220     for( int i_line = 0; i_line < i_h; i_line++ )
1221     {
1222         for( int i_column = 0; i_column < i_w; i_column++ )
1223         {
1224             int i_total_offset = i_line_offset + i_x + i_column;
1225             p_outY->p_pixels[ i_total_offset ] = i_yuv_y;
1226             p_outU->p_pixels[ i_total_offset ] = i_yuv_u;
1227             p_outV->p_pixels[ i_total_offset ] = i_yuv_v;
1228             p_outA->p_pixels[ i_total_offset ] = i_alpha;
1229         }
1230         i_line_offset += i_pitch;
1231     }
1232     return true;
1233 }
1234
1235 static inline bool copy_rect( filter_sys_t* p_sys,
1236                               uint16_t i_x, uint16_t i_y,
1237                               uint16_t i_w, uint16_t i_h,
1238                               uint16_t i_sx, uint16_t i_sy )
1239 {
1240     plane_t *p_Y = p_sys->p_pic->p+Y_PLANE;
1241     plane_t *p_U = p_sys->p_pic->p+U_PLANE;
1242     plane_t *p_V = p_sys->p_pic->p+V_PLANE;
1243     plane_t *p_A = p_sys->p_pic->p+A_PLANE;
1244
1245     int i_pitch = p_Y->i_pitch;
1246     int i_lines = p_Y->i_lines;
1247
1248     fprintf( stderr, "copy_rect: (%d,%d)+(%d,%d) -> (%d,%d)\n", i_x, i_y, i_w, i_h, i_sx, i_sy );
1249
1250     if( i_x + i_w > i_pitch || i_sx + i_w > i_pitch )
1251         return false;
1252     if( i_y + i_h > i_lines || i_sy + i_h > i_lines)
1253         return false;
1254
1255     if( i_w <= 0 || i_h <= 0 )
1256         return true;
1257
1258     uint8_t *pb_buffer = calloc( i_w * i_h, 4 );
1259     if( !pb_buffer )
1260         return false;
1261
1262     for( int i_line = 0; i_line < i_h; i_line++ )
1263     {
1264         for( int i_column = 0; i_column < i_w; i_column++ )
1265         {
1266             const int i_src_offset = ( i_sy + i_line ) * i_pitch + i_sx + i_column;
1267             const int i_tmp_offset = (    0 + i_line ) *     i_w +    0 + i_column;
1268
1269             pb_buffer[4*i_tmp_offset + 0] = p_Y->p_pixels[i_src_offset];
1270             pb_buffer[4*i_tmp_offset + 1] = p_U->p_pixels[i_src_offset];
1271             pb_buffer[4*i_tmp_offset + 2] = p_V->p_pixels[i_src_offset];
1272             pb_buffer[4*i_tmp_offset + 3] = p_A->p_pixels[i_src_offset];
1273         }
1274     }
1275
1276     for( int i_line = 0; i_line < i_h; i_line++ )
1277     {
1278         for( int i_column = 0; i_column < i_w; i_column++ )
1279         {
1280             const int i_tmp_offset = (   0 + i_line ) *     i_w +   0 + i_column;
1281             const int i_dst_offset = ( i_y + i_line ) * i_pitch + i_x + i_column;
1282
1283             p_Y->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 0];
1284             p_U->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 1];
1285             p_V->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 2];
1286             p_A->p_pixels[i_dst_offset] = pb_buffer[4*i_tmp_offset + 3];
1287         }
1288     }
1289     free( pb_buffer );
1290     return true;
1291
1292 }
1293
1294 static inline bool raw_line(  filter_sys_t* p_sys,
1295                               uint16_t i_x, uint16_t i_y,
1296                               uint16_t i_w )
1297 {
1298     plane_t *p_outY = p_sys->p_pic->p+Y_PLANE;
1299     plane_t *p_outU = p_sys->p_pic->p+U_PLANE;
1300     plane_t *p_outV = p_sys->p_pic->p+V_PLANE;
1301     plane_t *p_outA = p_sys->p_pic->p+A_PLANE;
1302     int i_pitch = p_outY->i_pitch;
1303     int i_lines = p_outY->i_lines;
1304     if ( i_x + i_w > i_pitch)
1305         return false;
1306     if ( i_y > i_lines)
1307         return false;
1308
1309     int i_line_offset = i_y * i_pitch + i_x;
1310
1311     for( int i_column = 0; i_column < i_w; i_column++ )
1312     {
1313         int i_offset = i_line_offset + i_column;
1314         uint8_t i_color = p_sys->read_buffer[i_column];
1315         p_outY->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][0];
1316         p_outU->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][1];
1317         p_outV->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][2];
1318         p_outA->p_pixels[ i_offset ] = p_sys->ar_color_table_yuv[i_color][3];
1319     }
1320
1321     return true;
1322 }
1323
1324
1325 /*****************************************************************************
1326  * MouseEvent: callback for mouse events
1327  *****************************************************************************/
1328 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
1329                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
1330 {
1331     VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(psz_var);
1332
1333     filter_t *p_filter = (filter_t *)p_data;
1334     filter_sys_t *p_sys = p_filter->p_sys;
1335
1336     if( !p_sys->b_vnc_mouse_events )
1337         return VLC_SUCCESS;
1338
1339     vout_thread_t *p_vout = (vout_thread_t*)p_sys->p_vout;
1340     int i_x, i_y;
1341     int i_v;
1342
1343
1344     i_v = var_GetInteger( p_sys->p_vout, "mouse-button-down" );
1345     i_y = var_GetInteger( p_sys->p_vout, "mouse-y" );
1346     i_x = var_GetInteger( p_sys->p_vout, "mouse-x" );
1347
1348     vlc_mutex_lock( &p_sys->lock );
1349
1350     const int v_h = p_vout->fmt_in.i_visible_height;
1351     const int v_w = p_sys->i_vnc_width * v_h / p_sys->i_vnc_height;
1352     const int v_x = (p_vout->fmt_in.i_visible_width-v_w)/2;
1353
1354     i_x -= v_x;
1355
1356     if( i_y < 0 || i_x < 0 || i_y >= v_h || i_x >= v_w )
1357     {
1358         vlc_mutex_unlock( &p_sys->lock );
1359         msg_Dbg( p_this, "invalid mouse event? x=%d y=%d btn=%x", i_x, i_y, i_v );
1360         return VLC_SUCCESS;
1361     }
1362     if( !p_sys->b_connection_active )
1363     {
1364         vlc_mutex_unlock( &p_sys->lock );
1365         return VLC_SUCCESS;
1366     }
1367
1368 #ifdef VNC_DEBUG
1369     msg_Dbg( p_this, "mouse event x=%d y=%d btn=%x", i_x, i_y, i_v );
1370 #endif
1371
1372     /* */
1373     i_x = i_x * p_sys->i_vnc_width / v_w;
1374     i_y = i_y * p_sys->i_vnc_height / v_h;
1375
1376     /* buttonMask bits 0-7 are buttons 1-8, 0=up, 1=down */
1377     rfbPointerEventMsg ev;
1378     ev.type = rfbPointerEvent;
1379     ev.buttonMask = i_v;
1380     ev.x = htons(i_x);
1381     ev.y = htons(i_y);
1382
1383     write_exact( p_filter, p_sys->i_socket,
1384                  (char*)&ev, sz_rfbPointerEventMsg);
1385
1386     vlc_mutex_unlock( &p_sys->lock );
1387
1388     return VLC_SUCCESS;
1389 }
1390
1391 /*****************************************************************************
1392  * KeyEvent: callback for keyboard events
1393  *****************************************************************************/
1394 static int KeyEvent( vlc_object_t *p_this, char const *psz_var,
1395                      vlc_value_t oldval, vlc_value_t newval, void *p_data )
1396 {
1397     VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
1398
1399     filter_t *p_filter = (filter_t *)p_data;
1400     filter_sys_t *p_sys = p_filter->p_sys;
1401
1402     if( !p_sys->b_vnc_key_events )
1403         return VLC_SUCCESS;
1404
1405     msg_Dbg( p_this, "key pressed (%d) ", newval.i_int );
1406
1407     if ( !newval.i_int )
1408     {
1409         msg_Err( p_this, "Received invalid key event %d", newval.i_int );
1410         return VLC_EGENERIC;
1411     }
1412
1413     vlc_mutex_lock( &p_sys->lock );
1414     if( !p_sys->b_connection_active )
1415     {
1416         vlc_mutex_unlock( &p_sys->lock );
1417         return VLC_SUCCESS;
1418     }
1419
1420     uint32_t i_key32 = newval.i_int;
1421     i_key32 = htonl(i_key32);
1422     rfbKeyEventMsg ev;
1423
1424     ev.type = rfbKeyEvent;
1425     ev.down = 1;
1426     ev.pad = 0;
1427
1428     /* first key-down for modifier-keys */
1429     if (newval.i_int & KEY_MODIFIER_CTRL)
1430     {
1431         ev.key = 0xffe3;
1432         write_exact( p_filter, p_sys->i_socket,
1433                      (char*)&ev, sz_rfbKeyEventMsg);
1434     }
1435     if (newval.i_int & KEY_MODIFIER_SHIFT)
1436     {
1437         ev.key = 0xffe1;
1438         write_exact( p_filter, p_sys->i_socket,
1439                      (char*)&ev, sz_rfbKeyEventMsg);
1440     }
1441     if (newval.i_int & KEY_MODIFIER_ALT)
1442     {
1443         ev.key = 0xffe9;
1444         write_exact( p_filter, p_sys->i_socket,
1445                      (char*)&ev, sz_rfbKeyEventMsg);
1446     }
1447
1448     /* then key-down for the pressed key */
1449     ev.key = i_key32;
1450     write_exact( p_filter, p_sys->i_socket,
1451                  (char*)&ev, sz_rfbKeyEventMsg);
1452
1453     ev.down = 0;
1454
1455     /* then key-up for the pressed key */
1456     write_exact( p_filter, p_sys->i_socket,
1457                  (char*)&ev, sz_rfbKeyEventMsg);
1458
1459     /* last key-down for modifier-keys */
1460     if (newval.i_int & KEY_MODIFIER_CTRL)
1461     {
1462         ev.key = 0xffe3;
1463         write_exact( p_filter, p_sys->i_socket,
1464                      (char*)&ev, sz_rfbKeyEventMsg);
1465     }
1466     if (newval.i_int & KEY_MODIFIER_SHIFT)
1467     {
1468         ev.key = 0xffe1;
1469         write_exact( p_filter, p_sys->i_socket,
1470                      (char*)&ev, sz_rfbKeyEventMsg);
1471     }
1472     if (newval.i_int & KEY_MODIFIER_ALT)
1473     {
1474        ev.key = 0xffe9;
1475        write_exact( p_filter, p_sys->i_socket,
1476                     (char*)&ev, sz_rfbKeyEventMsg);
1477     }
1478     vlc_mutex_unlock( &p_sys->lock );
1479
1480     return VLC_SUCCESS;
1481 }
1482
1483 static void vnc_encrypt_bytes( unsigned char *bytes, char *passwd )
1484 {
1485     unsigned char key[8];
1486     unsigned int i;
1487
1488     for (i = 0; i < 8; i++)
1489         key[i] = i < strlen( passwd ) ? passwd[i] : '\0';
1490
1491     gcry_cipher_hd_t ctx;
1492     gcry_cipher_open( &ctx, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB,0);
1493
1494     /* reverse bits of the key */
1495     for( i = 0 ; i < 8 ; i ++ )
1496         key[i] =
1497             (key[i] >> 7) +
1498             (((key[i] >> 6) & 0x01 ) << 1 ) +
1499             (((key[i] >> 5) & 0x01 ) << 2 ) +
1500             (((key[i] >> 4) & 0x01 ) << 3 ) +
1501             (((key[i] >> 3) & 0x01 ) << 4 ) +
1502             (((key[i] >> 2) & 0x01 ) << 5 ) +
1503             (((key[i] >> 1) & 0x01 ) << 6 ) +
1504             ((key[i] & 0x01) << 7 );
1505
1506     gcry_cipher_setkey( ctx, key, 8 );
1507     gcry_cipher_encrypt( ctx, bytes, CHALLENGESIZE, bytes, CHALLENGESIZE );
1508     gcry_cipher_close( ctx );
1509 }
1510